Signaling method for a stereoscopic video service and apparatus using the method

Abstract

Disclosed are a signaling method for a stereoscopic video service and an apparatus using the method. An image decoding method comprises: a step of determining a field value based on a broadcast service type and a display mode in decoding a program level descriptor; and a step of determining an encoded stream type, whether an elementary stream is a reference stream, whether the elementary stream is a left-eye image or a right-eye image, additional image upsampling information and information on a subsampled line. Thus, efficiency of encoding / decoding an additional image for a stereoscopic video content may increase.

Description

TECHNICAL FIELD[0001]The present invention relates to a signaling method for stereoscopic videoservices and an apparatus using the same method, and more particularly, to a decoding method and a decoding apparatus.BACKGROUND ART[0002]Human being receives 80% or more of information through eyes. The information transfer through vision occupies a very important weight in human. A stereoscopic video, which is a video providing a sense of realism as human being can feel in reality, provides depth perception and presence together to a two-dimensional video. As a method for providing the information, a three-dimensional stereoscopic technology such as depth-map information and stereoscopic videos has been developed. The depth-map information shows the stereoscopic effect using the depth information at a two-dimensional video, but has a difficulty in obtaining the accurate depth information. As a result, the depth-map information has not yet been widely used.[0003]Left and right two-dimensi...

AI Technical Summary

Benefits of technology

The present invention provides a method for signaling stereoscopic video service and an apparatus that uses this method. This method allows for the use of additional descriptor information which was previously necessary for the provision of stereoscopic services. The technical effect of this invention is the improved delivery of stereoscopic video services through existing signaling methods.

Problems solved by technology

The depth-map information shows the stereoscopic effect using the depth information at a two-dimensional video, but has a difficulty in obtaining the accurate depth information.

As a result, the depth-map information has not yet been widely used.

However, a common file format for storing the stereoscopic video and a transmission protocol for transmitting the stereoscopic video are not defined, which cause a problem of the use spread of the corresponding stereoscopic video.

However, the above-mentioned standards, which are a standard for differentiating a file format and a depth-map information video for storing stereoscopic contents, has a limitation in transmitting the stereoscopic contents constructed through one or two elementary streams, in particular, applying for an MPEG-2 transmission stream (TS) that is a digital broadcast transmission environment.

Therefore, the method for constructing a stereoscopic video constructed by left and right videos as two independent elementary streams, respectively, has a limitation in transmitting the stereoscopic videos with the existing MPEG-2 transmission stream.

In addition, when the stereoscopic video is constructed by the single elementary stream, the left and right videos are compounded so as to be constructed by the single video and thus, the stereoscopic video can be transmitted by the existing MPEG-2 transmission stream but the construction information of the transmitted compound image cannot be grasped, which results in a limitation in recognizing and processing construction information of the transmitted compound image as the 2D video rather than as the stereoscopic video.

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